Electrical Calculators
AC Power

kW to kVA Calculator

kW to kVA Calculator. Single-phase, balanced three-phase, apparent power and power-factor calculations. Calculations run in your browser. Entered electrical values are not uploaded to our server.

Inputs
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Calculations run in your browser. Entered electrical values are not uploaded to our server.
ⓘMathematical estimate only. Verify equipment datasheets, manufacturer instructions, electrical codes and qualified design before real-world use. Do not work on energized electrical systems unless you are qualified and authorized to do so.

Formula & method

kVA = kW / PF

Worked example

4.5 kW at PF 0.9 = 5 kVA

Assumptions & safety boundary

Mathematical estimate only. Verify equipment datasheets, manufacturer instructions, electrical codes and qualified design before real-world use. Do not work on energized electrical systems unless you are qualified and authorized to do so.